@Fischblog

Wieder so ein cooles Türchen im #Adventskalender !

Falls sich jemand ein Bild davon machen möchte, wie die Land-Ozeanverteilung auf der Erde vor 359mio Jahren, am Ende des Devon aussah, und wie CO2 und Temperatur sich damals entwickelten: Filmchen gucken?
https://climatejustice.social/@anlomedad/113171648967010656

Das D in der Buchtabenleiste des Charts steht für Devon. Die Fischgräte steht für ein Massenaussterben .

Quellen
CO2 und cTemp #Judd etal 2024
#PlateTectonic Modell von Chris #Scotese von seinem YT-Kanal

@ai6yr
Awesome!
The blessings of #climatechange : first, the couple fled the summer heat and went hiking in the Lombardy mountains. To discover freshly unearthed, 280mio year old amphibian tracks.

Where was that area 280mio years ago? And what was the Northern latitude ice extent, global mean temperature and CO2 concentration?

I stitched a chart from #Judd et al 2024 on top of tectonic animations by Meredith 2021 on the left, and a youtube video by Chris Scotese on the right.

Sondrio, Lombardy, Italy can't be seen ^^. But it's supposed to be near the centre of the earths where the Meredith animation shows Greenland and Scandinavia next to it. In the gap between them is England. And just below England to the south east is Lombardy. Or check it out here https://dinosaurpictures.org/ancient-earth/#280 , also by Scotese.
Huge differences in how the two earth models differ in land mass distribution.
Maybe, the new find can help put Lombardy at 280Ma on land in both models, which at the moment see it drowned under water.

#paleoclimate #permian

A new paper by #Judd and #Tierney et al maps temperature and CO2 for the last 485 million years. https://www.science.org/doi/10.1126/science.adk3705

#GavinSchmidt blogged about the new paper: https://www.realclimate.org/index.php/archives/2024/09/phantastic-job/

It raises the global temperature bar to 35°C, and averages around 28 or so.
Their CO2 is almost always about 1000ppm and notably doesn't really follow the temperature evolution in its ups and downs.

The chart from the movie in the toot above on its own.
The paper's main chart doesn't contain CO2, but in the supplement is one. So I copied that to the main chart.

But I feel it is important to digest it together with the information how Earth actually looked when global temperature spiked or dropped. So the movie above is going to be my go-to reference now.
#paleoclimate #PlateTectonic #CO2